Tweaking UA Ranger
This tweak follows the intent of recent UA proficiency and Fighter alterations. Under this rule the ranger: hunter can use a Long Rest to switch between their sub-class features.
For example at 3rd level, the options are Colossus Slayer, Horde Breaker and Giant Killer. At 7th level the options are Escape the Horde, Multiattack Defense, and Steel Will.
Under this tweak, the Hunter uses a Long Rest to switch, for example, from Colossus Slayer to Giant Killer. Then using a further Long Rest, switches from Multiattack to Steel Will.